| chemical and biological comparisons on supercritical extracts of tanacetum cinerariifolium (trevir) sch. bip. with three related species of chrysanthemums of sardinia (italy). | in this manuscript, the authors compare the chemical composition and the biological effects of extracts of some sardinian plant species: glebionis coronaria (l.) spach [=chrysanthemum coronarium l.], locally known as 'caragantzu', glebionis segetum (l.) fourr. [=chrysanthemum segetum l.], known as 'caragantzu masedu', and sardinian endemic species plagius flosculosus (l.) alavi and heywood [=chrysanthemum flosculosus l.], known as 'caragantzu burdu'. in addition, the authors compare the pyrethri ... | 2009 | 19173127 |
| genomics of compositae crops: reference transcriptome assemblies and evidence of hybridization with wild relatives. | although the compositae harbours only two major food crops, sunflower and lettuce, many other species in this family are utilized by humans and have experienced various levels of domestication. here, we have used next-generation sequencing technology to develop 15 reference transcriptome assemblies for compositae crops or their wild relatives. these data allow us to gain insight into the evolutionary and genomic consequences of plant domestication. specifically, we performed illumina sequencing ... | 2014 | 24103297 |
| telomere and 45s rdna sequences are structurally linked on the chromosomes in chrysanthemum segetum l. | some reports have shown that nucleolar organizer regions are located at the telomeric region and have a structural connection with telomeres at the cellular level in many organisms. in this study, we found that all 45s ribosomal dna (rdna) signals were located at telomeric regions on the chromosomes in chrysanthemum segetum l., and the 45s rdna showed distinct signal patterns on different metaphase chromosome spreads. the bicolor fluorescence in situ hybridization experiment on the extended fibe ... | 2012 | 21537919 |
| an nadph and fad dependent enzyme catalyzes hydroxylation of flavonoids in position 8. | yellow flavonols contribute to flower pigmentation in asteraceae. in contrast to common flavonols, they show additional hydroxyl groups in position 6 and/or 8 of the aromatic a-ring in addition to the basic 5,7-hydroxylation pattern. an enzyme introducing a hydroxyl group in position 8 of flavonols and flavones was demonstrated for the first time with enzyme preparations from petals of chrysanthemum segetum. flavanones, dihydroflavonols and glucosylated flavonols and flavones were not accepted a ... | 2006 | 16678869 |
| udp-glucose: flavonol 7-o-glucosyltransferase activity in flower extracts of chrysanthemum segetum. | the yellow colour of chrysanthemum segetum petals is due to the presence of the 7-o-glucosides of quercetin and particularly gossypetin (8-hydroxyquercetin). in petal extracts of c. segetum an enzyme was demonstrated which catalyzes the transfer of the glucosyl moiety of uridine 5'-diphosphoglucose (udpg) to the 7-hydroxyl group of flavonols with gossypetin and quercetin as the best substrates. besides flavonols flavanones and flavones were found to be glucosylated in the 7-position. the ph-opti ... | 2009 | 9167271 |